Menu branch

[Ignat Semenov]

Hello guys,

The branch has been merged to master with a few more cleanups (namely fixed 
missing or incorrect "What's this" for the newly added items; changed the 
page name to "Icons"; changed the page icon to "preferences-desktop-icons").

Thanks goes to Sho for reviewing the branch and nitpicking on everything, as 
well as general support. :)

Best regards,
Ignat Semenov